Open AccessBook
Understanding Delta-Sigma Data Converters
TLDR
This chapter discusses the design and simulation of delta-sigma modulator systems, and some of the considerations for implementation considerations for [Delta][Sigma] ADCs.Abstract:
Chapter 1: Introduction.Chapter 2: The first-order delta-sigma modulator.Chapter 3: The second-order delta-sigma modulator.Chapter 4: Higher-order delta-sigma modulation.Chapter 5: Bandpass and quadrature delta-sigma modulation.Chapter 6: Implementation considerations for [Delta][Sigma] ADCs.Chapter 7: Delta-sigma DACs.Chapter 8: High-level design and simulation.Chapter 9: Example modulator systems.Appendix A: Spectral estimation.Appendix B: The delta-sigma toolbox.Appendix C: Noise in switched-capacitor delta-sigma data converters.read more
Citations
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Proceedings ArticleDOI
A 102dB dynamic range audio sigma-delta modulator in 40nm CMOS
TL;DR: A second-order audio sigma-delta modulator has been implemented in 40nm CMOS with 0.05mm2 thickness and measured results show 90dB SNDR, 98dB THD, and 102dB dynamic range with-in 24kHz bandwidth, while consuming 500μW of total power at 6.5MHz sampling.
Proceedings ArticleDOI
A Cartesian Sigma-Delta transmitter architecture
TL;DR: A transmitter architecture that enables high Peak to Average Power Ratio (PAPR) signals transmission with good linearity and efficiency is proposed and compared to those obtained with a Polar Sigma Delta transmitter architecture.
Journal ArticleDOI
A Fast-Transient Boost Converter With Noise-Reduction Techniques for Wireless Sensor Networks
TL;DR: In this article, a fast delta-sigma modulator for a boost converter to solve the EMI problem is proposed, which can be directly inputted by 0.8-1.2 V for 1.8 V output.
Patent
Modified first-order noise-shaping dynamic-element-matching technique
TL;DR: In this paper, a technique is proposed to selectively enable a first sequence of unit elements of a plurality of units of a digital-to-analog converter to convert a digital code to an analog signal in response to a control signal.
Proceedings ArticleDOI
Oversampled Sigma Delta ADC decimation filter: Design techniques, challenges, tradeoffs and optimization
TL;DR: A brief overview of ΣΔ ADCs, various techniques of decimation filter design and different architectures, design methods, and practical issues, solutions and tradeoffs is presented.
References
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Journal ArticleDOI
A higher order topology for interpolative modulators for oversampling A/D converters
TL;DR: Higher order modulators are shown not only to greatly reduce oversampling requirements for high-resolution conversion applications, but also to randomize the quantization noise, avoiding the need for dithering.
Journal ArticleDOI
Decimation for Sigma Delta Modulation
TL;DR: It is shown that digital filters comprising cascades of integrate-and-dump functions can match the structure of the noise from sigma delta modulation to provide decimation with negligible loss of signal-to-noise ratio.
Journal ArticleDOI
An analysis of nonlinear behavior in delta - sigma modulators
Sasan H. Ardalan,J.J. Paulos +1 more
TL;DR: This paper introduces a new method of analysis for deltasigma modulators based on modeling the nonlinear quantizer with a linearized gain, obtained by minimizing a mean-square-error criterion, followed by an additive noise source representing distortion components.
Book ChapterDOI
The Structure of Quantization Noise from Sigma-Delta Modulation
James C. Candy,O. Benjamin +1 more
TL;DR: Simple algebraic expressions for this modulation noise and its spectrum in terms of the input amplitude are derived and can be useful for designing oversampled analog to digital converters that use sigma-delta modulation for the primary conversion.
Journal ArticleDOI
A fourth-order bandpass sigma-delta modulator
TL;DR: The modulator of a bandpass analog/digital (A/D) converter, with 63 dB signal/noise for broadcast AM bandwidth signals centered at 455 kHz, has been implemented by modifying a commercial digital-audio sigma-delta ( Sigma Delta ) converter.